beginBatch

public void beginBatch()

Begins a batch operation. This stores and merges all change notifications occuring in all property maps until
endBatch() is called. Each call to this method MUST be followed by a call to endBatch().
This method can be called an unlimited number of times without calling endBatch() in between, but each
call must have a corresponding call to endBatch(). Only when exiting from the
outermost endBatch() the changes be propagated to the listeners.